Concrete form



.I. H. HILTON.

CONCRETE FORM. APPLICATION FILED MAY 23, 1918.

1,405,212; Patented Jan. 31,1922.

I T0561 whom it hcaylconcern:

UNITED srArEsfi' Jenn HARRYHILTON, or CLEVELAND, OHIO, IASSIGNOR TO THEirvnnho'mc rnnssnn PATENT o en,

STEEL GOMPANY, OEICLEV ELAND, onian eonPonATI'on on 03103) Applicationfiled May 23,

'Be it known that 1, JOHN; HARRY HIL ON, a citizen of, the UnitedStates, residing at Cleveland, in the county ofCuyahoga; and State-ofOhio, have-invented a certain new and useful Improvement in ConcreteForms, of which the following is a full, clear and exact description,reference being-had to the accompanying drawings] I I, j This inventionrelates generally to concrete'f orms, employed in the ma king of cementor concrete structures, andmorepar ticularly to a form of'theinvertedpan type now used in the formation of ceilings and roofs. In, concreteformsjof this general type it has been customary, to provide some;separate means for connecting adjacent form sections, and besidesrequiring separate articles of manufactureto effect. this l connec--tions considerable tilnejandu labor are involved iii-properly placingand arranging thesaid connecting meansand pan forms.

One obj ectof my present invention, therefore, is to'simplify andcheapen the form v as a whole so that";great economywill be had both inzrnanufacture and in installation for'u e-U =f The invention also hasfor its-object to provide a concrete form capablefof producing'aceiling. on roof of the girder, slab or dome type; .l a r Incidentallyto the above named objects, the{ invention involves providing a. formwhich in itself will be capable of vsustaining all-of the weight of theplastic mass thereby dispensing with the separate supporting and holdingmeans heretofore employed this type-of concrete forms; and anotherobject of;, the-' invention is to provide a concrete I form embodyingthese various characteristics which shallalso b'ei'capable of expansiveadjustments whereby said forms can beuscd for the formation of ceilingsor roofs of various ,areash r ,7 II 5 VAnother objectofthe inventionisto provide a concrete form for ceilings and roofs, which, on accountofits structural strength, will require a minimum-amount of shoring.With thesevariousobjects in view, the invention'consists broadly inproviding a concrete formfof the. type described-with integral sidesupports preferably I in the, form, of channel members, each supportcomprlsing in its make-up at least one horizontal member or portion andone vertical member .1 CONCRETE roam. I 7

I 'iSpecincation of Letters Patent.

at/91pm 922. {Serial No. 256,111. I I, 3

. '7 cr -portion, said-horizontal andvertical portions being united.

, The invention consistslalso in certain novel features of 'constructiomand themanner of comb ning thesame,; 9,11 of-which will be fully setforth inthedetailed; description and 7 pointed out in theappendedclaimsa I I In the drawings forming a part of this specification, I haveshown several j embodimentsofmy invention and in which Fi l isa verticalsectional view of aplurality of -mold sections arranged towprovide, abeamed or girder ceiling; Fig. 2 is a simi.- lar view showing the moldsections arranged toprovide a flat ceiling;yF 3 aaview "showing theassemblageemployed fo ypro ducing a crown'or dome ceiling Figgisaslightly modified constructionof Eig, v 1 Figs. '5 and 6 show sectional'views 0fstillfurther modifications; and Fig.' 7 is a sectional'elevation showing the manner-gaff bridging or connectingitvvo moldsectionsby means of an, extension section. I i I In the practicalembodiment of my inven t on I employ a sheet-metal panaA off s uitablethickness, said pan being made in lengths ofsiiz, eight orten feetas.,desired andthe wldth of saidfpan is ordinarily from twenty totwenty-four inches, This pan is given any, suitable contour according to-the load to befcarried and is used inverted as shown, a series ofsuchpans being arranged side by [side-so as to provide agirderorv beamedI I portion 7' B of :the I ceiling, :therebetween, while the flat orslab portion C, of the ceiling is carried by the central portion of thpa i Heretofore it hasbeen custoinary to-arrange the ends of thepans: insome sort of channel support, or they have been con;

nected by clamps or fastening ,means to ya sofiitrboard and thesechannels or supports have in turn been arranged upon stringers.supported shoring. These connecting devices, heretofore employed,-areobj ectionable owing to thelmultiplic'ityof parts which requireconnection either upon the upper or lower side" and it is thereforeWiththe idea of eliminating a number of these parts andproviding astructure whichfwill in itself have all the strength necessary; to suport theforms that my present type of orni has been devised and this Iaccomplishlby providing a channel member ,1) at each edge of. the pan,each channelmember'having an upright or vertical portion and'upper andlower horizontalportions. In. other words, the channel member stands onedge or side. It will be noted, therefore, that the pan portion of themold ends at the point X, and the channel member D begins at this point.7

In operatiomthe pans with integral channel members are arranged so as tobring the upright. portions of the channel members togetherand'anysuitable form of lockin connection can be employed such as a s ottedbolt E and' key wedgeF. The channel members rest upon'stringers'G whichare arranged at suitable intervals according to the length of the panand'when the pans or mold sections arethus' arranged side by side andconnected together, a complete ceiling mold of the girder'type isprovided, and the channelmembers not only form a suitable meansforconnecting themol'd sections but also provide ample supports capableof carrying the load imposed thereon. r

In F ig. 7 I have shown the manner of making an extension by means of ashort or intermediate'pan ormold section A? which'is interposed betweentwo pans or mold sections of the adopted length. In,

this construction" the usual stringers G rest upon a cross pieceH and anintermediate stringer I is arranged centrally of the 1nterm'ediate orconnecting sections.

In Fig. Q'the pan or mold sectionlA is nearly flat and can be curvedeither upward y as show-n in'full lines or downwardly as shown in dottedlinesand as. this curvature is verys'light a ceilingproduced'upon theseforms willbeipractically of theflat' or slab formation. 'Thechannelmember D is formed at each edge of the pan A? as previously describedand the mold sections are united or connected together exactly the sameas heretofore, the channel members alsoresting .upon stringers andconstituting the connecting support for the mold sec tion, r

In connection with the flat mold sections A I may'employ a plurality ofdome or crown sections K asshown in Fig. 3, each dome or crown section Kformed of sheet metaland comprising sideportions K, top' portion K andfoot portions K If desired:

these oot portions could be omitted. -Thes'e domes or crowns K are,arranged in any do sired'manner so far as spacing is concerneduponthe'flat or slab pans and then the concrete is poured as usual andthe ceiling when formed will be of the dome or crown type, and it willbe understood that when the flat pans'are removed the domes or crownswill beremoved at the same time. a V

'In connection with the flat. or slab pan sections A provided withchannel members ateach edge I may also employ girder'pans A having anangle edge A at -each side thereof, the vertical end of'said angle beingslab forms, and in case flat. or slab formsof channel members are not tobe had, the

supports may be sufiicient without the aid of channel members. I

In each construction it will be understood that slotted bolts and keyw'edges'or other forms of locking devices are employed for locking theform "sections together. After inserted between the channel members ofthe the cement or concrete has set a s'uflicient length of time, thelocking means are moved and the pans or forms "taken down and this canbe accomplished by removing all ofthe forms at once-orin installmentsaccording to the nature 'ofthe work'being done. a

- By the employment of the channel members placed together asshown,"it-'is obvious that an exceedingly strong and durable support isprovided'for the'shaping portions of the mold, and by forming thesechannel members integral with the mold sections an exceedingly simple?and inexpensive form of mold is provided, one which can be used overandover, as the-bends or angles necessary 1n the formation'of thevarious channel IIIGIIlbBISWlll provide stlff or strengthening portionscapable of'wi-thstanding consider-- able usage without shapement.

The concrete shown an'd describe'd is also capable of being indentationor other mis nested toa certain extent and the forms are capable ofbeing'completelynested."

Having thus described my invention, what I claim is:-' I

1. The'combination with a' pair of forms,

' each having depending edges, offlanged members arranged 'in pairs andbetween which the depending edges of t'heforms are? arranged andmeansconnecting'said flanged members and depending edges. 7

2. The combination with a pairof forms having laterally projectingedges, said edges having --depending "portions, of a pair of flangedmembers, and means for'connecting said depending bers. I

3. The combination with a pair of fbrms having depending edges, of asecond air of forms having flanged and depen ing edges, a; pairofflanged members, and means for connecting'fsa idflanged members 'and thedependingp'ortions' of said"forms.-,

portions and flanged mem- 5 JOHN HARRY HILTON. f

- In testimony. whereof, hereunto afiix my:

signature.

form constructed as herein

